The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 1991
Filed:
May. 23, 1990
Applicant:
Inventor:
Peter Venn, Wuppertal, DE;
Assignee:
Gebr. Happich GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25F / ;
U.S. Cl.
CPC ...
20412995 ;
Abstract
A brightening method for parts of aluminum or aluminum alloy is described which is characterized, in particular, by the fact that the parts are treated in an alkaline electrolyte, operated with direct current, preferably having the composition